NDLI: Analysis of current density and related parameters in spinal cord stimulation.

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Analysis of current density and related parameters in spinal cord stimulation.

Content Provider	Semantic Scholar
Author	Wesselink, Wilbert A. Holsheimer, Jan Boom, Herman B. K.
Copyright Year	1998
Abstract	A volume conductor model of the spinal cord and surrounding anatomical structures is used to calculate current (and current density) charge per pulse, and maximum charge density per pulse at the contact surface of the electrode in the dorsal epidural space, in the dorsal columns of the spinal cord and in the dorsal roots. The effects of various contact configurations (mono-, bi-, and tripole), contact area and spacing, pulsewidth and distance between contacts and spinal cord on these electrical parameters were investigated under conditions similar to those in clinical spinal cord stimulation. At the threshold stimulus of a large dorsal column fiber, current density and charge density per pulse at the contact surface were found to be highest (1.9.10(5) microA/cm2 and 39.1 microC/cm2.p, respectively) when the contact surface was only 0.7 mm2. When stimulating with a pulse of 500 microseconds, highest charge per pulse (0.92 microC/p), and the largest charge density per pulse in the dorsal columns (1.59 microC/cm2. p) occurred. It is concluded that of all stimulation parameters that can be selected freely, only pulsewidth affects the charge and charge density per pulse in the nervous tissue, whereas both pulsewidth and contact area strongly affect these parameters in the nonnervous tissue neighboring the electrode contacts.
Starting Page	115
Ending Page	116
Page Count	2
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://doc.utwente.nl/15415/1/Analysis_of_current_density-wesselink.pdf
PubMed reference number	9631328v1
Volume Number	6
Issue Number	2
Journal	IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
Language	English
Access Restriction	Open
Subject Keyword	Anatomic structures Dorsal funiculus Nerve Tissue Neurostimulation procedures of spinal cord tissue PNMA2 gene Plant Roots Posterior root of spinal nerve Stimulation (motivation) Tissue fiber
Content Type	Text
Resource Type	Article

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